138348784 has 40 divisors (see below), whose sum is σ = 316233728. Its totient is φ = 57378240.

The previous prime is 138348781. The next prime is 138348787. The reversal of 138348784 is 487843831.

It is an interprime number because it is at equal distance from previous prime (138348781) and next prime (138348787).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138348781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16452 + ... + 23395.

Almost surely, 2^138348784 is an apocalyptic number.

138348784 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

138348784 is an abundant number, since it is smaller than the sum of its proper divisors (177884944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138348784 is a wasteful number, since it uses less digits than its factorization.

138348784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39893 (or 39887 counting only the distinct ones).

The product of its digits is 516096, while the sum is 46.

The square root of 138348784 is about 11762.1759891612. The cubic root of 138348784 is about 517.1999196897.

The spelling of 138348784 in words is "one hundred thirty-eight million, three hundred forty-eight thousand, seven hundred eighty-four".